| 摘要 |
In transmission current density measurement by the Gottesfeld's method and methanol permeability coefficient measurement by gas chromatography and liquid chromatography, the measured values can be a measure of the crossover level. However, the correlation between the measured values and the crossover loss is unknown, and, thus, the level of the crossover loss cannot be estimated. This invention provides a novel measuring method in which the methanol crossover loss can be directly measured. The measuring method is characterized in that the crossover loss is determined based on a difference between, with respect to MEA for methanol fuel cells, voltage where a cathode catalyst layer is not influenced by methanol crossover and voltage where the cathode catalyst layer is influenced by methanol crossover. |
